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Preparation method of shading adhesive tape for wireless charger

A technology for wireless chargers and shading tapes, applied in applications, adhesives, household appliances, etc., can solve the problems of affecting appearance, not having anti-fingerprint performance, film performance, etc., to enhance dirt resistance and reduce cleaning difficulty. , reducing the effect of adhesion

Active Publication Date: 2020-12-29
ZHEJIANG OUREN NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, this kind of tape does not have anti-fingerprint performance. After repeated use, the residual fingerprint marks not only affect the appearance, but also have a certain impact on the performance of the film material.

Method used

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  • Preparation method of shading adhesive tape for wireless charger
  • Preparation method of shading adhesive tape for wireless charger

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1~4

[0022] Embodiments 1 to 4: A method for preparing a light-shielding adhesive tape for a wireless charger, comprising a black ink layer 1, a substrate layer 2, and an adhesive layer 3, and the black ink layer 1 and the adhesive layer 3 are respectively Located on the upper surface and the lower surface of the substrate layer 2, the side of the adhesive layer 3 opposite to the substrate layer 2 is provided with a release layer 4;

[0023] The black ink layer 1 is obtained by drying the black ink, and the black ink is obtained through the following steps:

[0024] S1. Mix 60~80 parts of water-based polyurethane, 15~25 parts of deionized water, 1~5 parts of 1,1',1"-methylene tris(4-isocyanate)benzene, 0.01~0.03 parts of tripolyphosphoric acid Sodium is added to the high-speed stirring dispersant for stirring, the speed is 300~500r / min, and the mixture is uniform;

[0025] S2. Add 1~5 parts of carbon black, 1~1.5 parts of sodium silicate, 1~5 parts of polyethyleneimine, 0.5~2 part...

Embodiment 1

[0031] In embodiment 1, light absorbing agent is selected from nanometer Al / Al 2 o 3 For the core-shell material, the above-mentioned coupling agent is selected from coupling agent KH-580, the above-mentioned substrate layer 2 is a PET layer with a thickness of 2 μm, and the thickness of the above-mentioned black ink layer 1 is 1 μm.

Embodiment 2

[0032] In Example 2, the light absorbing agent is selected from nano-nickel powder, the above-mentioned coupling agent is selected from coupling agent KBM403, the above-mentioned substrate layer 2 is a PET layer with a thickness of 2.5 μm, and the thickness of the above-mentioned black ink layer 1 is 1.3 μm.

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Abstract

The invention discloses a preparation method of a shading adhesive tape for a wireless charger. The shading adhesive tape comprises a black ink layer, a base material layer and an adhesive layer, theblack ink layer and the adhesive layer are located on the upper surface and the lower surface of the base material layer respectively, and a release layer is arranged on the side, opposite to the basematerial layer, of the adhesive layer. The black ink layer is obtained by drying black ink, and the black ink is prepared by the following steps: S1, adding 60-80 parts of waterborne polyurethane, 15-25 parts of deionized water, 1-5 parts of 1,1',1''-methylidynetris(4-isocyanatobenzene) and 0.01-0.03 part of sodium tripolyphosphate into a high-speed stirred dispersing agent for stirring at the rotating speed of 300-500 r / min, and conducting uniform mixing; and S2, adding 1-5 parts of carbon black, 1-1.5 parts of sodium silicate, 1-5 parts of polyethyleneimine, 0.5-2 part of octadecyl dimethylbenzyl ammonium chloride and 0.5-1.5 parts of a coupling agent, adjusting the rotating speed to 500-600 r / min, and conducting uniform dispersing and stirring. The adhesive tape has anti-fingerprint performance, fingerprint traces cannot be left after the adhesive tape is used for multiple times in various environments, and corrosion of fingerprint sweat stains to the adhesive tape can be avoided.

Description

technical field [0001] The invention belongs to the technical field of adhesive tapes, and in particular relates to a preparation method of a light-shielding adhesive tape used for a wireless charger. Background technique [0002] Wireless charging technology, also known as inductive charging and non-contact charging, is a new charging technology derived from wireless power transmission technology. Wireless charging technology has developed rapidly in recent years, but it has also encountered many technical difficulties, such as improving charging efficiency, reducing costs, and the effective charging distance is too short. In order to obtain higher charging efficiency and reduce or eliminate the influence of the electromagnetic field on the mobile phone during charging, it is necessary to use an electromagnetic shielding film for shielding. The function of the electromagnetic shielding film is to isolate the influence of the electromagnetic field on the mobile phone, and p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/25C09J7/20C09J7/40C09D11/102C09D11/03
CPCC09J7/255C09D11/102C09D11/03C09J2467/006C09J2301/122
Inventor 夏厚君涂大记潘华杨晓明向建军
Owner ZHEJIANG OUREN NEW MATERIALS CO LTD
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